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Yes, both ngDesk and HelpDesk offer a Free Trial.
ngDesk is designed for Large Enterprises, Medium Business and Small Business.
HelpDesk is designed for Large Enterprises, Medium Business and Small Business.
Pricing for ngDesk Starts at $4/User/Month whereas for HelpDesk Starts at $29/User/Month when Billed Yearly.
Some top alternatives to ngDesk includes Zendesk Support, Zoho Desk, Tidio Helpdesk, Freshservice, Halo Service Desk, Freshdesk, LiveAgent, HelpDesk, SysAid, Jitbit Helpdesk, ReadyDesk, UseDesk, Sitehelpdesk, LabiDesk, HESK and BoldDesk.
Some top alternatives to HelpDesk includes Zendesk Support, Zoho Desk, Tidio Helpdesk, Freshservice, Freshdesk, SupportBee, Teamwork Desk, SysAid, Jitbit Helpdesk, Snappy, Helpspot, ReadyDesk, HelpdeskEddy, Help Desk Premier, Support.cc by 500apps and BoldDesk.